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Welcome!

I'm currently focused on Python and Django development. I’m currently available one day a week for part-time work — whether it's small coding tasks, data cleanup, or website updates using Django or Python. If you have a project that could use a hand, feel free to reach out! You can also check out my Lingcslaw Homepage (note: it's in Japanese) for more background.

Contact:　[email protected]

blog articles

Prod: Don't delay cancellation of sub after suspension 2026.06.05
Prod: Don't delete Stripe accounts on Day 90 2026.06.03
Prod: Cleanup half signup accounts 2026.05.20
Dj: No import Django magic 2026.05.20
Dj: Limit the size of a uploading file 2026.05.19
Dj: N+1 query problem 2026.05.12
Prod: Prevent Stripe from showing your personal email 2026.05.10
Prod: Trial System 2026.05.07
Prod: Suspension policy on overdue invoices 2026.05.01
Prod: Testing the system 2026.04.26
Prod: Roadmap to use real Stripe and CloudFront 2026.04.24
Bootstrap: How to broaden the width of a table 2026.04.24
Prod: other .env security issues 2026.04.20
Prod: Brevo alert 2026.04.20
Prod: AWS security issues 2026.04.19
Dj: Image file preview 2026.04.14
Dj: dbshell with PostgreSQL 2026.04.04
Dj: singnals.py 2026.03.28
Prod: Next move (S3) 2026.03.08
Prod: Advanced Architectures for SaaS 2026.03.07
Prod: Setting a limit to downloading 2026.03.06
Prod: About Cost 2026.03.06
Dj: Password error 2026.03.05
Promo: Youtube channnel 2026.03.03
Prod: Bring-Your-Own-Storage (BYOS) 2026.03.02
Prod: Sign up but quit. Then again Sign up. 2026.02.20
AWS: Deployment of Django 2026.01.07
Prod: Data retention and wording of emails 2026.01.06
Dj: Filters on the admin page 2026.01.02
Prod: Do I need to send emails to clients? 2025.12.21
Prod: deletion does not delete completely 2025.12.13
Prod: When to delete clients and documents 2025.12.06
Prod: Period passed, but is_active is still True. 2025.12.06
Prod: Cancelled, but you can still use it!? 2025.12.05
uid64 2025.11.23
Prod: Signup and Email Confirmation 2025.11.15
Prod: Signup and Legal matters 2025.11.14
Prod: Refining my client portal 2025.10.23
Dj: admin page 2025.10.19
Prod: Linking payment system to client portal 2025.10.01
Prod: how to create a multi-admin version 2025.09.04
Prod: Limit work space for a user 2025.09.02
Prod: from GitHub to local and venv 2025.08.31
Prod: Next Step 20225.08.29
PA: How to upload a file 2025.08.28
Dj: way to view and download files? 2025.08.26
Dj: adding a new field (title) that can’t be NULL 2025.08.26 2025.08.26
Dj: where did I define title? 2025.08.25
Dj: Bootstrap 2025.08.23
Dj: how to hide documents 2025.08.21
Dj: save() in views.py 2025.08.19
Dj: exclude = ... in admin.py 2025.08.19
Dj: dashboard.html 2025.08.18
Dj: urls.py 2025.08.18
Dj: views.py 2025.08.18
Dj: Why still validating the upload? 2025.08.16
Dj: {% load crispy_forms_tags %} 2025.08.16
Dj: {% if pic_list %} 2025.08.16
Dj: forms.py to read a picture file 2025.08.15
Dj: class Meta: 2025.08.14
Dj: forms.py and models.py 2025.08.14
Dj: admin.py 2025.08.14
Dj: ClientDocument(models.Model) 2025.08.14
Dj: OneToOneField(User, ...) 2025.08.14
Production: Where can I start creating the portal? 2025.08.10
Production: Changing projects on PA 2025.08.08
Django: urls.py 2025.08.07
Django: INSTALLED_APPS 2025.08.07
Production: testing .env and settings.py 2025.08.07
Production: adding .env and .gitignore 2025.08.05
Production: venv/ or another virtualenv? 2025.08.04
Production: pip freeze > requirements.txt? 2025.08.04
Production: Is venv necessary? 2025.08.03
Production: Where should I place my client_portal? 2025.07.30
Production: first commercial Django site 2025.07.29
PythonAnywhere: Copy my projects to GitHub (2) 2025.07.27
Django: collectstatic 2025.07.27
Python: venv 2025.07.24
PythonAnywhere: Copy my projects to GitHub 2025.07.20
SQL: JOIN 3 tables 2025.07.19
Production: two pythonanywhere accounts okay? 2025.07.18
Production: Database size included in the Disk size? 2025.07.18
Production: Where to deploy 2025.07.18
Production: What to do 2025.07.14
Django: <a href="boring">Boring Form</a> 2025.07.14
Django: fields in DetailView 2025.07.13
Django: fields 2025.07.13
Dj: settings.AUTH_USER_MODEL 2025.07.13
Django: the whole picture 2025.07.13
Python: super() 2025.07.11
Django: Template names by convention 2025.07.11
Django: Where is the original `form_valid()`? 2025.07.10
Django: Hiding URL doesn't prevent access 2025.07.10
Django: tests.py 2025.07.09
Django: dbshell vs shell 2025.07.08
Jobs: How to find Django jobs 2025.07.08
Pythonanywhere: How to download files 2025.07.07
Django: scripts 2025.07.06
Django: alternative to a pull-down list 2025.07.05
Django: if almost identical apps, same database? 2025.07.03
Django: login.html 2025.07.01
Django: How to use old data from database 2025.06.30
Django: forms.py 2025.06.30
Django: models.py 2025.06.28
Django: log out 2025.06.27
Django: from URL to html 2025.06.26
Django: login and redirect 2025.06.26
Django: two "login.html"s 2025.06.25
Django: Where can I find 'login' and 'logout'? 2025.06.24
Django: How can Django know my email and id? 2025.06.24
Django: I made a login page 2025.06.24
Django: CSRF -- Cross-Site Request Forgery 2025.06.23
Django: staff user or not 2025.06.23
Django: class IndexView() 2025.06.17
Django: Avoiding race conditions using F() 2025.06.16
Django: reverse() and reverse_lazy() 2025.06.10
Django: "no such table: gview_cat" error 2025.06.10
Django: namespace and name in urls.py 2025.06.08
Django: two versions of index(request)　2025.06.03
Django: Where is the output printed?　2025.05.31
Django: templates　2025.05.31
Django: Where is admin info?　2025.05.30　
Django: the DRY Principle　2025.05.29
SQLite: Where to start　2025.05.29
Django: <slug:guess>　2025.05.27
Django: path() in urls.py　2025.05.27
Django: Adding an input box　2025.05.26
Django: various types of views　2025.05.26
Django: How to create your own package　2025.05.24
Django: How to add a new app　2025.05.23
Django: views.py, urls.py, and main.html　2025.05.23
Django: views/views.py　2025.05.22
Django: views/urls.py　2025.05.21
Django: MVC　2025.05.18
Django: mysite/settings.py　2025.05.12
GitHub: Undo Accidental Change　2025.05.12
Django: Cost　2025.05.10
How to use nano　2025.05.09
Django: urls.py　2025.05.05
Django: python manage.py shell　2025.05.04
SQLite for the first time　2025.05.04
Django: Autos CRUD (Part 2)　2025.05.02
Django: Autos CRUD (Part 1)　2025.05.01
Installing Dj on PA (Part 7)　2025.04.30
GH: --rebase　2025.04.22
GH: create a branch　2025.04.22
Py: lambda as y=f(x)　2025.04.21
Python: os.environ[ ]　2025.04.20
"export PATH" and "sys.path"　2025.04.19
os.path.expanduser()　2025.04.19
Installing Dj on PA (Part 6)　2025.04.17
GitHub: READMEのためgit pushできない!?　2025.04.15
Bashでfileを検索する　2025.04.14
Installing Dj on PA (Part 5)　2025.04.14
GitHub: git logで : が出た!?　2025.04.10
GitHub: originとmainの違い　2025.04.07
Installing Dj on PA (Part 4)　2025.04.06
Installing Dj on PA (Part 3)　2025.04.04
Installing Dj on PA (Part 2)　2025.04.02
Installing Dj on PA (Part 1)　2025.04.02
Code解析redirect.py　2025.03.31
Code解析client2.py(urllib)　2025.03.31
Code解析client1.py　2025.03.30
Code解析server.py　2025.03.29
Code解析socket1.py　2025.03.29
PythonでOOP（Part 6）　2025.03.27
PythonでOOP（Part 5）　2025.03.25
PythonでOOP（Part 4）　2025.03.24
PythonでOOP（Part 3）　2025.03.23
PythonでOOP（Part 2）　2025.03.23
GitHub: localでcommitしたけどpushがまだのfilesの確認方法　2025.03.23
Rock, Paper & Scissorsをtkinter化する（後編）　2025.03.22
Rock, Paper & Scissorsをtkinter化する（中編）　2025.03.20
Remove older versions of Python　2025.03.17
Rock, Paper & Scissorsをtkinter化する（前編）　2025.03.17
Number Guessing Gameをtkinter化する　2025.03.16
Python code (simple calculator)にtkinterを組み込む（その３）　2025.03.14
Python code (simple calculator)にtkinterを組み込む（その２）　2025.03.12
Python code (simple calculator)にtkinterを組み込む（その１）　2025.03.11
ChatGPTでGitHubのpull requestを学ぶ　2025.03.09
ChatGPTでHomepageを模写してみた　2025.03.05
VS CodeでGitHubを使ってみる（格闘中#3）　2025.02.27
urllib.parse.urlencode()の使い方　2025.02.24
urllib.request.urlopen()の使い方　2025.02.24
VS CodeでGitHubを使ってみる（格闘中#2）　2025.02.23
VS CodeでGitHubを使ってみる（格闘中）　2025.02.22
JSON stringsとPython dictionariesの違い　2025.02.21
英語で2/3mをなんて言う？　2025.01.31
Jimdoの<head>をReverse Engineeringしてみた　2025.01.29
Pythonをinstallする　2025.01.14
Win11のOneDriveを使いやすくする　2025.01.12
PythonでOOP（Part 1）　2024.12.16
tkinterをClass化してみた　2024.12.15
はじめてのtkinter　2024.12.13
.pyファイルをダブルクリックでrunさせる　2024.12.07
Pyinstaller作成ファイルがMalwareとして認識される　2024.11.28
Watch out your AmazonCloudWatch　2024.10.22
AWS Application Load Balancer　2024.10.20
Reactってなんだ!?　2024.10.04
AWS S3でホームページを立ち上げてみた　2024.10.02
Pandasを学んでみた　2024.03.29
PHP Redirectの仕組みの検討　2024.03.11
Big O Notation　2024.02.29
Deploy WordPress to an Amazon EC2 instance (その１)　2024.02.28
Matplotlibを使ってみた　2024.02.06
PHP Sessions without Cookiesを試してみた　2024.02.04
AWSでEC2のinstanceをlaunchしてみた　2024.01.30
初心者向けGoogle Search Consoleの使い方#2　2024.01.21
PHP Sessionsを設定してその動きを確認してみた 2024.01.19
Binomial Distribution の variance はなぜ n∗p∗(1−p) なのか？ 2024.01.15
Razer Seiren Miniが[k]と[s]を拾わない !?　2024.01.06
DaVinci Resolve 18を使ってみた　2024.01.05&07
Google AnalyticsをJimdo(free)に設定してみた　2024.01.04
初心者向けGoogle Search Consoleの使い方　2024.01.02
PHPでHTTP Cookiesを設定してみた　2023.12.30
Audacityを使ってみた　2023.12.08-09
AWS Route 53で、ドメインを取得してみた　2023.12.02

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